25043364425 has 6 divisors (see below), whose sum is σ = 31053771918. Its totient is φ = 20034691520.

The previous prime is 25043364391. The next prime is 25043364443. The reversal of 25043364425 is 52446334052.

It can be written as a sum of positive squares in 3 ways, for example, as 261048649 + 24782315776 = 16157^2 + 157424^2 .

It is not a de Polignac number, because 25043364425 - 2⁶ = 25043364361 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 500867264 + ... + 500867313.

It is an arithmetic number, because the mean of its divisors is an integer number (5175628653).

Almost surely, 2^25043364425 is an apocalyptic number.

25043364425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25043364425 is a deficient number, since it is larger than the sum of its proper divisors (6010407493).

25043364425 is a wasteful number, since it uses less digits than its factorization.

25043364425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001734587 (or 1001734582 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 38.

Adding to 25043364425 its reverse (52446334052), we get a palindrome (77489698477).

The spelling of 25043364425 in words is "twenty-five billion, forty-three million, three hundred sixty-four thousand, four hundred twenty-five".